Protect against errors in gdb-mi.el handlers

* lisp/progmodes/gdb-mi.el (gdb-handle-reply): Handle errors
in 'handler-function' so the cleanup code after it runs
safely.  (Bug#39178)

1 files changed, 4 insertions, 1 deletions

diff --git a/lisp/progmodes/gdb-mi.el b/lisp/progmodes/gdb-mi.el
index 2978d4a7672..4b0fd66c7ed 100644
--- a/lisp/progmodes/gdb-mi.el
+++ b/lisp/progmodes/gdb-mi.el
@@ -324,7 +324,10 @@ in `gdb-handler-list' and clears all pending handlers invalidated
 by the reception of this reply."
   (let ((handler-function (gdb-get-handler-function token-number)))
     (when handler-function
-      (funcall handler-function)
+      (condition-case err
+          ;; protect against errors in handler-function
+          (funcall handler-function)
+        (error (message (error-message-string err))))
       (gdb-delete-handler token-number))))
 
 (defun gdb-remove-all-pending-triggers ()